src/hotspot/share/gc/shenandoah/shenandoahHeap.hpp

rev 48920 : [backport] Use PLAB for evacuations instead of TLAB

*** 31,40 ****
--- 31,41 ----
  #include "gc/shenandoah/shenandoahSharedVariables.hpp"
  #include "gc/shenandoah/shenandoahWorkGroup.hpp"
  #include "services/memoryManager.hpp"
  
  class ConcurrentGCTimer;
+ class PLABStats;
  class ShenandoahAsserts;
  class ShenandoahAllocTracker;
  class ShenandoahCollectorPolicy;
  class ShenandoahConnectionMatrix;
  class ShenandoahFastRegionSet;
*** 317,326 ****
--- 318,330 ----
  
    ShenandoahEvacOOMHandler _oom_evac_handler;
  
    ShenandoahSharedEnumFlag<GCCycleMode> _gc_cycle_mode;
  
+   PLABStats* _mutator_gclab_stats;
+   PLABStats* _collector_gclab_stats;
+ 
  #ifdef ASSERT
    int     _heap_expansion_count;
  #endif
  
  public:
*** 368,379 ****
    size_t tlab_capacity(Thread *thr) const /* override */;
    void object_iterate(ObjectClosure* cl) /* override */;
    void safe_object_iterate(ObjectClosure* cl) /* override */;
    size_t unsafe_max_tlab_alloc(Thread *thread) const /* override */;
    size_t max_tlab_size() const /* override */;
-   void resize_all_tlabs() /* override */;
-   void accumulate_statistics_all_gclabs() /* override */;
    HeapWord* tlab_post_allocation_setup(HeapWord* obj) /* override */;
    uint oop_extra_words() /* override */;
    size_t tlab_used(Thread* ignored) const /* override */;
    void stop() /* override */;
    virtual void safepoint_synchronize_begin();
--- 372,381 ----
*** 401,410 ****
--- 403,416 ----
  
    ShenandoahCollectorPolicy *shenandoahPolicy() const { return _shenandoah_policy; }
    ShenandoahPhaseTimings*   phase_timings()     const { return _phase_timings; }
    ShenandoahAllocTracker*   alloc_tracker()     const { return _alloc_tracker; }
  
+   void accumulate_statistics_all_gclabs();
+   PLABStats* mutator_gclab_stats()   const { return _mutator_gclab_stats; }
+   PLABStats* collector_gclab_stats() const { return _collector_gclab_stats; }
+ 
    inline ShenandoahHeapRegion* const heap_region_containing(const void* addr) const;
    inline size_t heap_region_index_containing(const void* addr) const;
    inline bool requires_marking(const void* entry) const;
  
    template <class T>
*** 579,588 ****
--- 585,597 ----
    // Call before starting evacuation.
    void enter_evacuation();
    // Call after finished with evacuation.
    void leave_evacuation();
  
+   void initialize_gclab(Thread* thread);
+   void finalize_mutator_gclab(Thread* thread);
+ 
  private:
    template<class T>
    inline void marked_object_iterate(ShenandoahHeapRegion* region, T* cl, HeapWord* limit);
  
    template<class T>